Printing-press attachment



J. H. CUNNINGHAM.

PRINTING PRESS ATTACHMENT.

APPUCATION FILED JULY 16, 1920.

1,38 1 806 Patented June 14, 1921.

ATTORNEYS UNITED STATES JOHN HENRY CUNNINGHAM, OF SAN FRANCISCO,CALIFORNIA.

PRINTING-PRESS ATTACHMENT.

menses.

Specification of Letters Patent.

Patented June 14, 1921.

Application filed July 16, 1920. Serial No. 396,630.

To all whom it may concern:

Be it known that 1, JOHN HENRY CUN- NINGI-IAM, a citizen of the UnitedStates, and a resident of San Francisco, in the county of San Franciscoand State of California, have invented a new and Improved Printing-PressAttachment, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in printing press attachments, anobject of the invention being to provide an improved means for quicklydrying printed sheets as they are delivered from the press.

A. further object is to provide a new device for introducing a currentof heated air to the sheets "to dry the ink as the sheets come from thepress and to utilize the air pump which is ordinarily employed to0perate the feeder for furnishing the current of air required.

A further object is to provide an attachment which is primarily designedfor use with the machine known to the trade as the Miller platen pressfeeder, but which may be utilized to advantage with other types offeeders.

With these and other objects in view the invention consists in certainnovel features of construction and combinations and arrangement of partsas will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawing:

Figure 1 is a fragmentary perspective view of a feeder with my improveddrying device attached.

Fig. 2 is a view in elevation showing the drying device in position onthe jogger box.

Fig. 3 is a view in section on the line 3-8 of Fig. 2.

Referring in detail to the drawings, 1 represents a well known type offeeder and 2 the jogger box of the feeder into which the printed sheets10 are delivered with the ink still wet on the sheets. 3 represents agas supply pipe located under the feeder. A flexible gas pipe 4 connectsthe gas supply pipe 3 to a burner tube 5, which is secured to the back 6of the jogger box 2, by means of brackets or hangers 7, preferably ofstrong metal as shown clearly in Fig. 3. A pipe coupling 13 is used toconnect the pipes 3 and 4, and a cook 13 located in the pipe couplingcontrols the flow of gas to the burner tube .5. i

The burner tube is provided with the usual perforations or burnerorifices 8. The brackets 7 also support an air tube 9 located directlyunder the burner tube 5 and having perforations located along its underslde adapted to direct a current of air from the tube 9 on to theprinted sheets 10, as they are delivered into the jogger box.

The air tube 9 is connected by a flexible pipe 11 to the air line 12which leads to the air pump commonly employed to operate the feeder. Theair pump is not illustrated. The slots or perforations 8 are located onthe under face of the burner tube 5 so that the current of air expelledfrom the air tube 9 will draw the jets of flame from the burner tubedownwardly and direct the heat of the burner on to the printed sheets 10as they are delivered into the jogger box.

While I have illustrated my invention as applied to a particular type offeeder it is obvious that a similar drying apparatus could be employedwith various types of feeders now on the market, and it is also apparentthat many slight changes and alterations might be made in the generalform of the parts described without departing from my invention, andhence I do not limit myself to the precise details set forth andconsider myself at liberty to make such slight changes and alterationsas may fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. An attachment for printing presses comprising a burner tube, an airdischarging tube located under the burner tube and directing the heatfrom the burner tube downwardly.

2. The combination with a receptacle adapted to receive printed sheets,of a burner tube, an air discharging tube located under the burner tubeand adapted to direct the heat from the burner tube onto the printingsheets.

3. An attachment for printing presses comprising a burner tube, aflexible pipe connecting the burner tube to a gas supply pipe, an airdischarging tube located under the burner tube and connected to the airline of a printing press, and means for directing a continuous currentof heated air downwardly from said air tube.

a. The combination. with a printing press,

a jogger box, and a delivering mechanism adapted to deliver printedsheets onto the jogger box, of a burner tube carried by the jogger box,an air discharge tube located under the burner tube and adapted todirect the heat from the burner tube onto the printed sheets.

5. The combination With a printing press and air pump, an air lineconnected With the pump, and a jogger box, of a pair of brackets on thejogger box, a burner tube carried by the brackets and connected with agas supply pipe, an air discharging tube carried by the brackets andlocated under the burner tube, said air discharging tube connected tosaid air line, whereby the operation of the air pump causes a continuouscurrent of heated air to be directed outwardly into the jogger box.

6. An attachment for printing presses comprising a pair of tubes locatedone above the other, both of said tubes having downwardly dischargingoutlet orifices, the upper of said tubes constituting a burner and thelower of said tubes constituting an air dis charge pipe.

7. An attachment for printing presses, comprising a burner tube, and. anair discharging tube dirccting the heat from the burner tube.

JOHN HENRY CUNNINGHAM.

